AITA for not wanting to share my PlayStation account password to my cousin

To start, I(24M) have a PS4 that used to belong to my cousin(30F). I've had it for about a year and a half. We've been playing together for quite a while now, with her on her PS5 and me on the PS4 that used to be hers. About a week ago, we started playing Destiny 2.

Now here's the main part of the story. She asked me for my email and password so she could log into my account. She said it was to level up my character because of a mission in the game. For some context, she had previously asked for my password to do the same kind of thing in Dead by Daylight.

I wasn't completely comfortable with it, but I ended up giving it to her because I thought she genuinely just wanted to help me level up. Even so, I changed my password afterwards.

More recently, she asked me to do the same thing again for Destiny 2. I asked her if there was any other way to do it, and she replied:

"I was just trying to help you."

"Clearly you don't trust me, but whatever. Thanks."

"See you tonight if you still want to play."

Her response made me feel both sad and angry. Because of that, I decided not to play with her that night, even though we had planned to.

Later, she kept messaging me asking where I was, and then she sent another message saying:

"I let you use my account whenever you want, but I can't log into yours to help you? What kind of bs is that?"

To add more context, the PS4 I have still has her user profile on it, and there have been times when she offered to let me log into her account so I could download games from her library. It's not that I didn't want to play those games, but I never asked for access—she was always the one who offered.

She compared those situations to imply that I was being hypocritical.

What's your opinion on this? AITA for not letting her access my account? Am I actually being a hypocrite?